Arbitrary Code Injection Affecting kibana-8.19-config package, versions <8.19.15-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

Social Trends
EPSS
0.71% (49th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-KIBANA819CONFIG-16346242
  • published3 May 2026
  • disclosed27 Mar 2026

Introduced: 27 Mar 2026

CVE-2026-33938  (opens in a new tab)
CWE-94  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Minimos:latest kibana-8.19-config to version 8.19.15-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kibana-8.19-config package and not the kibana-8.19-config package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, the @partial-block special variable is stored in the template data context and is reachable and mutable from within a template via helpers that accept arbitrary objects. When a helper overwrites @partial-block with a crafted Handlebars AST, a subsequent invocation of {{&gt; @partial-block}} compiles and executes that AST, enabling arbitrary JavaScript execution on the server. Version 4.7.9 fixes the issue. Some workarounds are available. First, use the runtime-only build (require(&#39;handlebars/runtime&#39;)). The compile() method is absent, eliminating the vulnerable fallback path. Second, audit registered helpers for any that write arbitrary values to context objects. Helpers should treat context data as read-only. Third, avoid registering helpers from third-party packages (such as handlebars-helpers) in contexts where templates or context data can be influenced by untrusted input.

CVSS Base Scores

version 3.1